[Heathkit] pesky SB-104A deaf why??

[Bill Cromwell]

On Mon, 2013-04-29 at 21:11 -0400, Alexander N. Gerli wrote:
> Hi, folks,
> 
> Well, almost no progress, but I have a few ideas:
> 
> Before it REALLY went deaf, it would suddenly go quiet, then the rx would
> come back. Once when it did this, I hit the PTT button on the mic and the
> rx was back. I figured a dirty relay. So, I prised the cover off it and
> gave the contacts a shot of DeOxit. Nope that didn't work.
> 
> So, now, here's what I suspect: a cold solder joint on one of the relay
> terminals. I'm going after that tomorrow. Hey, the relay has been under
> cover all these years; the contacts are probably all right. BUT a
> cold-solder joint might just show up. We'll see.
> 
> Anyone else have symptoms like this? PLEASE let me know!!
> 
> 73,
> 
> Sandy, AC1Y

Hi Sandy,

A cold solder joint on my Kenwood R-599 CW filter finally quit after ~30
years out of the factory. I recently disassembled a military boat anchor
that nobody wanted and even though it worked flawlessly I found a wire
that was never soldered at one end. Those things can and DO exist and
they WILL bite you.

73,

Bill  KU8H